matematikordbogen.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 22 April 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.141.234.130 is hosted by The Constant Company, LLC (AS20473) in United Kingdom. Mail is handled by mx10.mailspamprotection.com, mx20.mailspamprotection.com and 1 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 78.141.234.130 | 600s | 78.141.234.130.vultrusercontent.com | AS20473 | The Constant Company, LLC | 78.141.192.0/18 | 🇬🇧 United Kingdom | Canary Wharf |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx10.mailspamprotection.com | 34.149.79.66 | 66.79.149.34.bc.googleusercontent.com | AS396982 Google LLC |
| 20 | 3600s | mx20.mailspamprotection.com | 34.120.156.61 | 61.156.120.34.bc.googleusercontent.com | AS396982 Google LLC |
| 30 | 3600s | mx30.mailspamprotection.com | 34.111.121.216 | 216.121.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| TXT Record |
|---|
| v=spf1 +a +mx +a:ns1.usm87.siteground.biz include:_spf.mailspamprotection.com ~all |
| Policy | Record (matematikordbogen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx +a:ns1.usm87.siteground.biz include:_spf.mailspamprotection.com ~all |
| www CNAME | matematikordbogen.dk (all on matematikordbogen.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 4/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-04-22 |
| Expires | 2027-04-30 (188d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 01:52:01 shown | 1951ms | 4 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-02 06:24:13 | 1158ms | 4 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-27 18:06:27 | 1284ms | 4 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-18 08:49:36 | 1339ms | 4 NS 1 A 3 MX | 🔒 Secure |